I am wondering, it seems a lot of guessing is going on. This while there is no evidence of full exam. Everyone seems to think the worst of it while the question is how the thoracic nerve can be isolated. Well can it with the information we have at the moment? I would think no. But a full examination of all movements of arm, spine (T and C), nerve testing and strength might reveal far more. A fall on an outstretched arm could cause problems at the wrist, elbow, shoulder, scapula:thoracal and cervical for example.